[REN-BGP-stats] Weekly Global IPv4 R&E Routing Table Report

REN Routing Table Report cscora at frr.nsrc.org
Sat Jul 2 22:01:10 UTC 2022


This is an automated weekly mailing describing the state of the IPv4
Research & Education Routing Table received by NSRC's collector
from Internet2's network.

Daily listings are sent to ren-bgp-stats-all at lists.nsrc.org.

For historical data, please see https://bgp.nsrc.org.

If you have any comments please contact Philip Smith <philip at nsrc.org>.

IPv4 R&E Routing Table Report   22:00 GMT Sat 02 Jul, 2022

  IPv4 BGP Table (R&E) as seen at Internet2.

Report Website:     https://bgp.nsrc.org/REN
Detailed Analysis:  https://bgp.nsrc.org/REN/Internet2/

Analysis Summary
----------------

BGP routing table entries examined:                               22190
    Prefixes after maximum aggregation (per Origin AS):           12369
    Deaggregation factor:                                          1.79
    Unique aggregates announced (without unneeded subnets):       14278
    Number of IPv4 prefixes with a valid ROA:                      7352
    Number of IPv4 prefixes with an invalid ROA:                     48
    Number of IPv4 prefixes with no ROA:                          14790
Total ASes present in the Internet Routing Table:                  2712
    Prefixes per ASN:                                              8.18
Origin-only ASes present in the Internet Routing Table:            2344
Origin ASes announcing only one prefix:                            1047
Transit ASes present in the Internet Routing Table:                 368
Transit-only ASes present in the Internet Routing Table:             53
Paths with bogon ASNs present in the IPv4 Routing Table:              0
Average AS path length visible in the Internet Routing Table:       3.3
    Max AS path length visible:                                      16
    Max AS path prepend of ASN ( 10497)                              11
Prefixes from unregistered ASNs in the Routing Table:                 6
    Number of instances of unregistered ASNs:                         6
Number of 32-bit ASNs allocated by the RIRs:                      39725
Number of 32-bit ASNs visible in the Routing Table:                 597
Prefixes from 32-bit ASNs in the Routing Table:                    1661
Number of bogon 32-bit ASNs visible in the Routing Table:             0
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:              5
Number of addresses announced to Internet:                    243067928
    Equivalent to 14 /8s, 124 /16s and 236 /24s
    Percentage of available address space announced:                6.6
    Percentage of allocated address space announced:                6.6
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               99.6
Total number of prefixes smaller than registry allocations:        2834

APNIC Region Analysis Summary
-----------------------------

Prefixes being announced by APNIC Region ASes:                     4532
    Total APNIC prefixes after maximum aggregation:                2231
    APNIC Deaggregation factor:                                    2.03
Prefixes being announced from the APNIC address blocks:            4594
    Unique aggregates announced from the APNIC address blocks:     2575
APNIC Region origin ASes present in the Internet Routing Table:     527
    APNIC Prefixes per ASN:                                        8.72
APNIC Region origin ASes announcing only one prefix:                221
APNIC Region transit ASes present in the Internet Routing Table:     63
Average APNIC Region AS path length visible:                        3.8
    Max APNIC Region AS path length visible:                         16
Number of APNIC region 32-bit ASNs visible in the Routing Table:    195
Number of APNIC addresses announced to Internet:               45890112
    Equivalent to 2 /8s, 188 /16s and 58 /24s
APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079, 55296-56319,
                       58368-59391, 63488-64098, 64297-64395, 131072-151865
APNIC Address Blocks     1/8,  14/8,  27/8,  36/8,  39/8,  42/8,  43/8,
                        49/8,  58/8,  59/8,  60/8,  61/8, 101/8, 103/8,
                       106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8,
                       116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8,
                       123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8,
                       163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8,
                       203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8,
                       222/8, 223/8,

ARIN Region Analysis Summary
----------------------------

Prefixes being announced by ARIN Region ASes:                     11748
    Total ARIN prefixes after maximum aggregation:                 6531
    ARIN Deaggregation factor:                                     1.80
Prefixes being announced from the ARIN address blocks:            11575
    Unique aggregates announced from the ARIN address blocks:      7685
ARIN Region origin ASes present in the Internet Routing Table:     1241
    ARIN Prefixes per ASN:                                         9.33
ARIN Region origin ASes announcing only one prefix:                 434
ARIN Region transit ASes present in the Internet Routing Table:     158
Average ARIN Region AS path length visible:                         3.0
    Max ARIN Region AS path length visible:                          13
Number of ARIN region 32-bit ASNs visible in the Routing Table:     176
Number of ARIN addresses announced to Internet:               132259480
    Equivalent to 7 /8s, 226 /16s and 30 /24s
ARIN AS Blocks         1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations)  2138-2584, 2615-2772, 2823-2829, 2880-3153
                       3354-4607, 4865-5119, 5632-6655, 6912-7466
                       7723-8191, 10240-12287, 13312-15359, 16384-17407
                       18432-20479, 21504-23551, 25600-26591,
                       26624-27647, 29696-30719, 31744-33791
                       35840-36863, 39936-40959, 46080-47103
                       53248-55295, 62464-63487, 64198-64296, 393216-401308
ARIN Address Blocks      3/8,   4/8,   6/8,   7/8,   8/8,   9/8,  11/8,
                        12/8,  13/8,  15/8,  16/8,  17/8,  18/8,  19/8,
                        20/8,  21/8,  22/8,  23/8,  24/8,  26/8,  28/8,
                        29/8,  30/8,  32/8,  33/8,  34/8,  35/8,  38/8,
                        40/8,  44/8,  47/8,  48/8,  50/8,  52/8,  53/8,
                        54/8,  55/8,  56/8,  57/8,  63/8,  64/8,  65/8,
                        66/8,  67/8,  68/8,  69/8,  70/8,  71/8,  72/8,
                        73/8,  74/8,  75/8,  76/8,  96/8,  97/8,  98/8,
                        99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8,
                       130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8,
                       138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8,
                       147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8,
                       158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8,
                       166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8,
                       174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8,
                       206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8,
                      

RIPE Region Analysis Summary
----------------------------

Prefixes being announced by RIPE Region ASes:                      3542
    Total RIPE prefixes after maximum aggregation:                 2839
    RIPE Deaggregation factor:                                     1.25
Prefixes being announced from the RIPE address blocks:             3650
    Unique aggregates announced from the RIPE address blocks:      2960
RIPE Region origin ASes present in the Internet Routing Table:      675
    RIPE Prefixes per ASN:                                         5.41
RIPE Region origin ASes announcing only one prefix:                 304
RIPE Region transit ASes present in the Internet Routing Table:      98
Average RIPE Region AS path length visible:                         3.6
    Max RIPE Region AS path length visible:                          14
Number of RIPE region 32-bit ASNs visible in the Routing Table:     135
Number of RIPE addresses announced to Internet:                58020096
    Equivalent to 3 /8s, 117 /16s and 81 /24s
RIPE AS Blocks         1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations)  2773-2822, 2830-2879, 3154-3353, 5377-5631
                       6656-6911, 8192-9215, 12288-13311, 15360-16383
                       20480-21503, 24576-25599, 28672-29695
                       30720-31743, 33792-35839, 38912-39935
                       40960-45055, 47104-52223, 56320-58367
                       59392-61439, 61952-62463, 64396-64495
                       196608-213403
RIPE Address Blocks      2/8,   5/8,  25/8,  31/8,  37/8,  46/8,  51/8,
                        62/8,  77/8,  78/8,  79/8,  80/8,  81/8,  82/8,
                        83/8,  84/8,  85/8,  86/8,  87/8,  88/8,  89/8,
                        90/8,  91/8,  92/8,  93/8,  94/8,  95/8, 109/8,
                       141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8,
                       193/8, 194/8, 195/8, 212/8, 213/8, 217/8,

LACNIC Region Analysis Summary
------------------------------

Prefixes being announced by LACNIC Region ASes:                    1441
    Total LACNIC prefixes after maximum aggregation:                561
    LACNIC Deaggregation factor:                                   2.57
Prefixes being announced from the LACNIC address blocks:           1445
    Unique aggregates announced from the LACNIC address blocks:     764
LACNIC Region origin ASes present in the Internet Routing Table:    162
    LACNIC Prefixes per ASN:                                       8.92
LACNIC Region origin ASes announcing only one prefix:                64
LACNIC Region transit ASes present in the Internet Routing Table:    23
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        12
Number of LACNIC region 32-bit ASNs visible in the Routing Table:    65
Number of LACNIC addresses announced to Internet:               4238912
    Equivalent to 0 /8s, 64 /16s and 174 /24s
LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       61440-61951, 64099-64197, 262144-273820 + ERX transfers
LACNIC Address Blocks  177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
                       191/8, 200/8, 201/8,

AfriNIC Region Analysis Summary
-------------------------------

Prefixes being announced by AfriNIC Region ASes:                    921
    Total AfriNIC prefixes after maximum aggregation:               201
    AfriNIC Deaggregation factor:                                  4.58
Prefixes being announced from the AfriNIC address blocks:           921
    Unique aggregates announced from the AfriNIC address blocks:    289
AfriNIC Region origin ASes present in the Internet Routing Table:    49
    AfriNIC Prefixes per ASN:                                     18.80
AfriNIC Region origin ASes announcing only one prefix:               24
AfriNIC Region transit ASes present in the Internet Routing Table:   10
Average AfriNIC Region AS path length visible:                      2.7
    Max AfriNIC Region AS path length visible:                       12
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:   26
Number of AfriNIC addresses announced to Internet:              2658048
    Equivalent to 0 /8s, 40 /16s and 143 /24s
AfriNIC AS Blocks      36864-37887, 327680-329727 & ERX transfers
AfriNIC Address Blocks  41/8,  45/8, 102/8, 105/8, 154/8, 196/8, 197/8,
                      

APNIC Region per AS prefix count summary
----------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  2907         579       2140     456  SINET-AS Research Organization of Infor
  7497         429        182      24  CSTNET-AS-AP Computer Network Informati
  1237         190         74     135  KREONET-AS-KR KISTI, KR
  7575         176        330     122  AARNET-AS-AP Australian Academic and Re
 58647         175         18       2  KAGAWAU-AS Kagawa University, JP
  4538         128       4192      73  ERX-CERNET-BKB China Education and Rese
 55824         116         18      11  NKN-CORE-NW NKN Core Network, IN
  4621          78         37      10  UNINET-AS-AP UNINET-, TH
  4762          65          4       1  MAHIDOL-BORDER-AS Mahidol University, T
 23570          59          5      11  INCHEON-AS-KR UNIVERSITY OF INCHEON, KR

Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-APNIC

ARIN Region per AS prefix count summary
---------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 16509        2762       4562    1212  AMAZON-02, US
 14618         615       3990     470  AMAZON-AES, US
   668         208        702     176  DNIC-AS-00668, US
   376         204        178     153  RISQ-AS, CA
  5786         200         16       1  UPRENET, PR
  2152         157        507      90  CSUNET-NW, US
 18558         134         18       4  NETBLK-RCOEK, US
     1         121          1      45  LVLT-1, US
   270         121        329      86  AS270, US
 23024         114          7      17  OCDE, US

Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-ARIN

RIPE Region per AS prefix count summary
---------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
   680         285       1967     251  DFN Verein zur Foerderung eines Deutsch
   786         187       1775     184  JANET Jisc Services Limited, GB
  8895         179         24       4  ISU Internet Services Unit ISU, SA
   559         115        550     106  SWITCH Peering requests: peering at switch
  1103          99       1520      86  SURFNET-NL SURFnet, The Netherlands, NL
  2614          96         27      76  ROEDUNET, RO
   137          82        677      77  ASGARR Consortium GARR, IT
   553          73        449      73  BELWUE BelWue-Koordination, DE
  2200          64        599      59  FR-RENATER Reseau National de telecommu
  1930          58         81      53  RCCN Fundacao para a Ciencia e a Tecnol

Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-RIPE

LACNIC Region per AS prefix count summary
-----------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  1916         176        208      45  Rede Nacional de Ensino e Pesquisa, BR
 28391         152         10      66  Universidad Juarez Autonoma de Tabasco,
 11340          95         24      54  Red Universitaria Nacional, CL
  2715          58        102      38  Fundacao Carlos Chagas Filho de Amparo 
  1251          53         37      19  FUNDACAO DE AMPARO A PESQUISA DO ESTADO
 19611          48         17       2  Associacao Antonio Vieira - Unisinos, B
 61468          45          3      15  CEDIA, EC
  4270          43         16       1  Red de Interconexion Universitaria, AR
 28571          41         40      18  UNIVERSIDADE DE SAO PAULO, BR
 28614          37          2       2  Fundacao Universidade Regional de Blume

Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-LACNIC

AfriNIC Region per AS prefix count summary
------------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  2018         364        319      73  TENET-1, ZA
 36914         222         82       3  KENET-AS, KE
  2561          67          4      32  EUN, EG
  8094          48         48      15  PUKNET, ZA
327687          38         28       3  RENU, UG
327700          31         16       1  MoRENet, MZ
  6879          24          2       9  ENSTINET-, EG
 37182          18          8       1  TERNET, TZ
 37074          13          8       2  UG-AS, GH
 37501          11         49       6  UOFS, ZA

Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-AFRINIC

Global Per AS prefix count summary
----------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 16509        2762       4562    1212  AMAZON-02, US
 14618         615       3990     470  AMAZON-AES, US
  2907         579       2140     456  SINET-AS Research Organization of Infor
  7497         429        182      24  CSTNET-AS-AP Computer Network Informati
  2018         364        319      73  TENET-1, ZA
   680         285       1967     251  DFN Verein zur Foerderung eines Deutsch
 36914         222         82       3  KENET-AS, KE
   668         208        702     176  DNIC-AS-00668, US
   376         204        178     153  RISQ-AS, CA
  5786         200         16       1  UPRENET, PR

Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet

Global Per AS Maximum Aggregation summary
-----------------------------------------

   ASN  No of nets  Net Savings  Description
  7497         429          405  CSTNET-AS-AP Computer Network Information Cente
  2018         364          291  TENET-1, ZA
 36914         222          219  KENET-AS, KE
  5786         200          199  UPRENET, PR
  8895         179          175  ISU Internet Services Unit ISU, SA
 58647         175          173  KAGAWAU-AS Kagawa University, JP
 14618         615          145  AMAZON-AES, US
  1916         176          131  Rede Nacional de Ensino e Pesquisa, BR
 18558         134          130  NETBLK-RCOEK, US
  2907         579          123  SINET-AS Research Organization of Information a

Complete listing at https://bgp.nsrc.org/REN/Internet2/data-CIDRnet

List of Unregistered Origin ASNs (Global)
-----------------------------------------

    Bad AS  Designation  Net Originated      Transit AS  Transit AS Name
    394607  UNALLOCATED  104.249.65.0/24          23024  OCDE, US
     22063  UNALLOCATED  153.10.0.0/16             2152  CSUNET-NW, US
     22226  UNALLOCATED  156.1.0.0/16              2152  CSUNET-NW, US
     19658  UNALLOCATED  199.27.241.0/24          11096  FLORIDANET, US
    395514  UNALLOCATED  205.213.88.0/24           2381  WISCNET1-AS, US
    394607  UNALLOCATED  216.100.93.0/24          23024  OCDE, US

Complete listing at https://bgp.nsrc.org/REN/Internet2/data-badAS

Prefixes from the Special Purpose Address Registry (Global)
-----------------------------------------------------------

Prefix                Origin AS  Description
192.88.99.0/24             1103  SURFNET-NL SURFnet, The Netherlands, NL

Complete listing at https://bgp.nsrc.org/REN/Internet2/data-spar

Advertised Unallocated Addresses
--------------------------------

Unassigned Network     ASN Information  AS Name
103.151.24.0/24      Origin:     16509  AMAZON-02, US
103.151.24.0/24     Transit:     11537  INTERNET2-RESEARCH-EDU, US
192.31.196.0/24      Origin:       112  UNASSIGNED
192.31.196.0/24     Transit:      1103  SURFNET-NL SURFnet, The Netherlands, NL
192.88.99.0/24       Origin:      1103  SURFNET-NL SURFnet, The Netherlands, NL
192.88.99.0/24      Transit:     11537  INTERNET2-RESEARCH-EDU, US
198.135.168.0/24     Origin:     14618  AMAZON-AES, US
198.135.168.0/24    Transit:     16509  AMAZON-02, US
216.169.147.0/24     Origin:     14618  AMAZON-AES, US
216.169.147.0/24    Transit:     16509  AMAZON-02, US

Complete listing at https://bgp.nsrc.org/REN/Internet2/data-add-IANA

Number of prefixes announced per prefix length (Global)
-------------------------------------------------------

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:0        /9:1       /10:2       /11:3       /12:17      
/13:25      /14:59      /15:174     /16:2091    /17:463     /18:466     
/19:600     /20:985     /21:990     /22:1586    /23:1758    /24:12613   
/25:87      /26:56      /27:148     /28:7       /29:54      /30:0       
/31:0       /32:5       

Advertised prefixes smaller than registry allocations
-----------------------------------------------------

   ASN  No of nets  Total ann.  Description
 16509         428        2762  AMAZON-02, US
 36914         209         222  KENET-AS, KE
 14618         205         615  AMAZON-AES, US
  8895         174         179  ISU Internet Services Unit ISU, SA
 32440          73          88  LONI, US
 23024          53         114  OCDE, US
     1          38         121  LVLT-1, US
 25977          31          45  HCCS, US
 28614          31          37  Fundacao Universidade Regional de Blumenau, BR
 46115          31          34  LUTHER, US

Complete listing at https://bgp.nsrc.org/REN/Internet2/data-sXXas-nos

Number of /24s announced per /8 block (Global)
----------------------------------------------

   1:3         3:84        4:2         5:16        6:4         8:2      
  12:1        13:55       14:86       15:80       16:5        18:56     
  23:45       24:3        31:7        35:10       37:7        38:9      
  40:1        41:120      42:10       44:5        45:55       46:10     
  47:1        49:10       50:8        52:728      54:250      58:2      
  59:20       60:4        61:3        62:6        63:38       64:144    
  65:13       66:60       67:61       68:17       69:45       70:26     
  71:16       72:18       74:73       76:39       77:9        78:3      
  79:10       80:18       81:28       82:7        83:6        84:5      
  85:47       86:4        87:2        88:1        89:12       91:53     
  92:1        93:10       94:4        95:4        96:6        97:1      
  98:13       99:59      101:2       102:13      103:278     104:106    
 107:2       108:22      109:12      110:4       111:17      114:23     
 115:1       116:6       117:61      118:32      119:24      121:27     
 122:11      123:8       124:39      125:4       128:86      129:44     
 130:147     131:71      132:58      133:145     134:100     135:1      
 136:214     137:88      138:10      139:17      140:51      141:5      
 142:57      143:33      144:40      145:2       146:131     147:67     
 148:201     149:15      150:130     151:7       152:82      153:13     
 154:29      155:64      156:68      157:34      158:50      159:164    
 160:31      161:32      162:53      163:71      164:25      165:66     
 166:1       167:19      168:160     169:12      170:114     172:10     
 173:19      174:1       175:19      176:12      177:10      178:2      
 179:11      180:21      181:1       182:1       184:5       185:63     
 186:2       187:19      188:14      189:5       190:34      191:36     
 192:1508    193:318     194:132     195:82      196:158     197:129    
 198:500     199:325     200:231     201:38      202:627     203:432    
 204:355     205:199     206:208     207:196     208:105     209:133    
 210:184     211:13      212:151     213:16      214:8       216:155    
 217:11      218:22      219:6       220:17      222:5       223:3      


End of report


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