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

REN Routing Table Report cscora at frr.nsrc.org
Sat Aug 20 22:01:05 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 20 Aug, 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:                               22412
    Prefixes after maximum aggregation (per Origin AS):           12576
    Deaggregation factor:                                          1.78
    Unique aggregates announced (without unneeded subnets):       14595
    Number of IPv4 prefixes with a valid ROA:                      7591
    Number of IPv4 prefixes with an invalid ROA:                     66
    Number of IPv4 prefixes with no ROA:                          14755
Total ASes present in the Internet Routing Table:                  2785
    Prefixes per ASN:                                              8.05
Origin-only ASes present in the Internet Routing Table:            2400
Origin ASes announcing only one prefix:                            1079
Transit ASes present in the Internet Routing Table:                 385
Transit-only ASes present in the Internet Routing Table:             61
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:                      40026
Number of 32-bit ASNs visible in the Routing Table:                 640
Prefixes from 32-bit ASNs in the Routing Table:                    1802
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:              4
Number of addresses announced to Internet:                    242957816
    Equivalent to 14 /8s, 123 /16s and 61 /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:        2901

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

Prefixes being announced by APNIC Region ASes:                     4633
    Total APNIC prefixes after maximum aggregation:                2311
    APNIC Deaggregation factor:                                    2.00
Prefixes being announced from the APNIC address blocks:            4696
    Unique aggregates announced from the APNIC address blocks:     2669
APNIC Region origin ASes present in the Internet Routing Table:     586
    APNIC Prefixes per ASN:                                        8.01
APNIC Region origin ASes announcing only one prefix:                255
APNIC Region transit ASes present in the Internet Routing Table:     69
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:    231
Number of APNIC addresses announced to Internet:               46052160
    Equivalent to 2 /8s, 190 /16s and 179 /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:                     11777
    Total ARIN prefixes after maximum aggregation:                 6600
    ARIN Deaggregation factor:                                     1.78
Prefixes being announced from the ARIN address blocks:            11596
    Unique aggregates announced from the ARIN address blocks:      7795
ARIN Region origin ASes present in the Internet Routing Table:     1239
    ARIN Prefixes per ASN:                                         9.36
ARIN Region origin ASes announcing only one prefix:                 431
ARIN Region transit ASes present in the Internet Routing Table:     166
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:     179
Number of ARIN addresses announced to Internet:               131983256
    Equivalent to 7 /8s, 221 /16s and 231 /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:                      3601
    Total RIPE prefixes after maximum aggregation:                 2867
    RIPE Deaggregation factor:                                     1.26
Prefixes being announced from the RIPE address blocks:             3714
    Unique aggregates announced from the RIPE address blocks:      3023
RIPE Region origin ASes present in the Internet Routing Table:      683
    RIPE Prefixes per ASN:                                         5.44
RIPE Region origin ASes announcing only one prefix:                 306
RIPE Region transit ASes present in the Internet Routing Table:     100
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:     137
Number of RIPE addresses announced to Internet:                58038016
    Equivalent to 3 /8s, 117 /16s and 151 /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:                    1449
    Total LACNIC prefixes after maximum aggregation:                580
    LACNIC Deaggregation factor:                                   2.50
Prefixes being announced from the LACNIC address blocks:           1456
    Unique aggregates announced from the LACNIC address blocks:     797
LACNIC Region origin ASes present in the Internet Routing Table:    163
    LACNIC Prefixes per ASN:                                       8.93
LACNIC Region origin ASes announcing only one prefix:                64
LACNIC Region transit ASes present in the Internet Routing Table:    24
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        11
Number of LACNIC region 32-bit ASNs visible in the Routing Table:    68
Number of LACNIC addresses announced to Internet:               4253472
    Equivalent to 0 /8s, 64 /16s and 231 /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:                    946
    Total AfriNIC prefixes after maximum aggregation:               212
    AfriNIC Deaggregation factor:                                  4.46
Prefixes being announced from the AfriNIC address blocks:           946
    Unique aggregates announced from the AfriNIC address blocks:    307
AfriNIC Region origin ASes present in the Internet Routing Table:    48
    AfriNIC Prefixes per ASN:                                     19.71
AfriNIC Region origin ASes announcing only one prefix:               23
AfriNIC Region transit ASes present in the Internet Routing Table:   10
Average AfriNIC Region AS path length visible:                      2.9
    Max AfriNIC Region AS path length visible:                       12
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:   25
Number of AfriNIC addresses announced to Internet:              2629888
    Equivalent to 0 /8s, 40 /16s and 33 /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         572       2155     456  SINET-AS Research Organization of Infor
  7497         434        182      24  CSTNET-AS-AP Computer Network Informati
  1237         188         74     134  KREONET-AS-KR KISTI, KR
  7575         174        329     120  AARNET-AS-AP Australian Academic and Re
 58647         174         18       2  KAGAWAU-AS Kagawa University, JP
  4538         128       4192      73  ERX-CERNET-BKB China Education and Rese
 55824         115         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        2824       4568    1246  AMAZON-02, US
 14618         624       3991     482  AMAZON-AES, US
   668         218        687     180  DNIC-AS-00668, US
   376         203        178     152  RISQ-AS, CA
  5786         200         16       1  UPRENET, PR
  2152         156        507      91  CSUNET-NW, US
 18558         136         18       4  NETBLK-RCOEK, US
     1         122          2      46  LVLT-1, US
   270         120        329      85  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         282       1951     250  DFN Verein zur Foerderung eines Deutsch
   786         186       1775     183  JANET Jisc Services Limited, GB
  8895         178         24       4  ISU Internet Services Unit ISU, SA
   559         115        550     106  SWITCH Peering requests: peering at switch
  1103          98       1520      86  SURFNET-NL SURFnet, The Netherlands, NL
  2614          95         27      75  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      44  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          59        102      39  Fundacao Carlos Chagas Filho de Amparo 
  1251          58         37      19  FUNDACAO DE AMPARO A PESQUISA DO ESTADO
 61468          46          3      15  CEDIA, EC
  4270          42         16       1  Red de Interconexion Universitaria, AR
 28571          41         40      18  UNIVERSIDADE DE SAO PAULO, BR
 19611          37         17       2  Associacao Antonio Vieira - Unisinos, B
 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         375        319      73  TENET-1, ZA
 36914         232         82       3  KENET-AS, KE
  2561          67          4      32  EUN, EG
  8094          48         48      15  PUKNET, ZA
327687          38         28       3  RENU, UG
327700          34         16       1  MoRENet, MZ
  6879          24          2       9  ENSTINET-, EG
 37182          19          1      13  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        2824       4568    1246  AMAZON-02, US
 14618         624       3991     482  AMAZON-AES, US
  2907         572       2155     456  SINET-AS Research Organization of Infor
  7497         434        182      24  CSTNET-AS-AP Computer Network Informati
  2018         375        319      73  TENET-1, ZA
   680         282       1951     250  DFN Verein zur Foerderung eines Deutsch
 36914         232         82       3  KENET-AS, KE
   668         218        687     180  DNIC-AS-00668, US
   376         203        178     152  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         434          410  CSTNET-AS-AP Computer Network Information Cente
  2018         375          302  TENET-1, ZA
 36914         232          229  KENET-AS, KE
  5786         200          199  UPRENET, PR
  8895         178          174  ISU Internet Services Unit ISU, SA
 58647         174          172  KAGAWAU-AS Kagawa University, JP
 14618         624          142  AMAZON-AES, US
  1916         176          132  Rede Nacional de Ensino e Pesquisa, BR
 18558         136          132  NETBLK-RCOEK, US
  2907         572          116  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
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     /16:2087    /17:466     /18:471     
/19:608     /20:988     /21:1004    /22:1610    /23:1772    /24:12768   
/25:87      /26:55      /27:149     /28:7       /29:54      /30:0       
/31:0       /32:5       

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

   ASN  No of nets  Total ann.  Description
 16509         430        2824  AMAZON-02, US
 36914         219         232  KENET-AS, KE
 14618         207         624  AMAZON-AES, US
  8895         173         178  ISU Internet Services Unit ISU, SA
 32440          75          90  LONI, US
 23024          53         114  OCDE, US
     1          38         122  LVLT-1, US
 46115          32          35  LUTHER, US
 25977          31          45  HCCS, US
 28614          31          37  Fundacao Universidade Regional de Blumenau, BR

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        13:58       14:85       15:84       16:5        18:62     
  23:48       24:3        31:7        35:10       37:7        38:9      
  40:1        41:130      42:10       44:6        45:48       46:10     
  47:1        49:10       50:8        52:736      54:250      58:2      
  59:20       60:4        61:3        62:10       63:38       64:142    
  65:12       66:62       67:61       68:17       69:45       70:27     
  71:16       72:16       74:72       76:42       77:9        78:3      
  79:10       80:18       81:27       82:7        83:6        84:5      
  85:47       86:6        87:2        88:1        89:12       91:56     
  92:1        93:10       94:4        95:4        96:6        97:1      
  98:13       99:60      101:6       102:13      103:342     104:106    
 107:1       108:22      109:12      110:4       111:9       114:23     
 115:1       116:8       117:61      118:32      119:24      121:27     
 122:11      123:8       124:39      125:4       128:86      129:45     
 130:144     131:81      132:54      133:144     134:101     135:2      
 136:214     137:88      138:12      139:17      140:57      141:5      
 142:54      143:33      144:40      145:2       146:131     147:66     
 148:201     149:15      150:130     151:7       152:82      153:13     
 154:28      155:73      156:69      157:29      158:47      159:165    
 160:31      161:32      162:53      163:83      164:21      165:66     
 166:1       167:22      168:169     169:14      170:115     172:10     
 173:18      174:1       175:30      176:12      177:11      178:2      
 179:11      180:18      181:1       182:4       184:4       185:70     
 186:3       187:19      188:14      189:3       190:34      191:36     
 192:1512    193:318     194:132     195:88      196:160     197:137    
 198:496     199:315     200:223     201:38      202:637     203:436    
 204:370     205:155     206:208     207:193     208:107     209:132    
 210:183     211:13      212:173     213:16      214:8       216:160    
 217:11      218:22      219:6       220:17      222:5       223:4      


End of report


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