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

REN Routing Table Report cscora at frr.nsrc.org
Sat Apr 2 22:00:37 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 Apr, 2022

  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:                               22109
    Prefixes after maximum aggregation (per Origin AS):           12315
    Deaggregation factor:                                          1.80
    Unique aggregates announced (without unneeded subnets):       14192
    Number of IPv4 prefixes with a valid ROA:                     14215
    Number of IPv4 prefixes with an invalid ROA:                     76
    Number of IPv4 prefixes with no ROA:                          29901
Total ASes present in the Internet Routing Table:                  2757
    Prefixes per ASN:                                              8.02
Origin-only ASes present in the Internet Routing Table:            2384
Origin ASes announcing only one prefix:                            1078
Transit ASes present in the Internet Routing Table:                 373
Transit-only ASes present in the Internet Routing Table:             54
Average AS path length visible in the Internet Routing Table:       3.4
    Max AS path length visible:                                      15
    Max AS path prepend of ASN (211089)                              11
Prefixes from unregistered ASNs in the Routing Table:                 5
    Number of instances of unregistered ASNs:                         5
Number of 32-bit ASNs allocated by the RIRs:                      38986
Number of 32-bit ASNs visible in the Routing Table:                 621
Prefixes from 32-bit ASNs in the Routing Table:                    1689
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:                    242971678
    Equivalent to 14 /8s, 123 /16s and 116 /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:               99.5
Total number of prefixes smaller than registry allocations:        2702

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

Prefixes being announced by APNIC Region ASes:                     4655
    Total APNIC prefixes after maximum aggregation:                2293
    APNIC Deaggregation factor:                                    2.03
Prefixes being announced from the APNIC address blocks:            4708
    Unique aggregates announced from the APNIC address blocks:     2652
APNIC Region origin ASes present in the Internet Routing Table:     576
    APNIC Prefixes per ASN:                                        8.17
APNIC Region origin ASes announcing only one prefix:                249
APNIC Region transit ASes present in the Internet Routing Table:     67
Average APNIC Region AS path length visible:                        4.0
    Max APNIC Region AS path length visible:                         12
Number of APNIC region 32-bit ASNs visible in the Routing Table:    225
Number of APNIC addresses announced to Internet:               45923904
    Equivalent to 2 /8s, 188 /16s and 190 /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:                     11592
    Total ARIN prefixes after maximum aggregation:                 6448
    ARIN Deaggregation factor:                                     1.80
Prefixes being announced from the ARIN address blocks:            11474
    Unique aggregates announced from the ARIN address blocks:      7588
ARIN Region origin ASes present in the Internet Routing Table:     1237
    ARIN Prefixes per ASN:                                         9.28
ARIN Region origin ASes announcing only one prefix:                 434
ARIN Region transit ASes present in the Internet Routing Table:     160
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:     170
Number of ARIN addresses announced to Internet:               132162878
    Equivalent to 7 /8s, 224 /16s and 165 /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:                      3524
    Total RIPE prefixes after maximum aggregation:                 2813
    RIPE Deaggregation factor:                                     1.25
Prefixes being announced from the RIPE address blocks:             3585
    Unique aggregates announced from the RIPE address blocks:      2890
RIPE Region origin ASes present in the Internet Routing Table:      672
    RIPE Prefixes per ASN:                                         5.33
RIPE Region origin ASes announcing only one prefix:                 309
RIPE Region transit ASes present in the Internet Routing Table:      99
Average RIPE Region AS path length visible:                         3.6
    Max RIPE Region AS path length visible:                          15
Number of RIPE region 32-bit ASNs visible in the Routing Table:     134
Number of RIPE addresses announced to Internet:                58042240
    Equivalent to 3 /8s, 117 /16s and 167 /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:                    1432
    Total LACNIC prefixes after maximum aggregation:                570
    LACNIC Deaggregation factor:                                   2.51
Prefixes being announced from the LACNIC address blocks:           1436
    Unique aggregates announced from the LACNIC address blocks:     772
LACNIC Region origin ASes present in the Internet Routing Table:    167
    LACNIC Prefixes per ASN:                                       8.60
LACNIC Region origin ASes announcing only one prefix:                66
LACNIC Region transit ASes present in the Internet Routing Table:    22
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:    66
Number of LACNIC addresses announced to Internet:               4185632
    Equivalent to 0 /8s, 63 /16s and 222 /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:                    901
    Total AfriNIC prefixes after maximum aggregation:               186
    AfriNIC Deaggregation factor:                                  4.84
Prefixes being announced from the AfriNIC address blocks:           901
    Unique aggregates announced from the AfriNIC address blocks:    285
AfriNIC Region origin ASes present in the Internet Routing Table:    46
    AfriNIC Prefixes per ASN:                                     19.59
AfriNIC Region origin ASes announcing only one prefix:               20
AfriNIC Region transit ASes present in the Internet Routing Table:   11
Average AfriNIC Region AS path length visible:                      2.7
    Max AfriNIC Region AS path length visible:                        9
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:   26
Number of AfriNIC addresses announced to Internet:              2655744
    Equivalent to 0 /8s, 40 /16s and 134 /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         586       2084     457  SINET-AS Research Organization of Infor
  7497         432        182      24  CSTNET-AS-AP Computer Network Informati
  1237         189         74     135  KREONET-AS-KR KISTI, KR
 58647         179         18       2  KAGAWAU-AS Kagawa University, JP
  7575         176        330     123  AARNET-AS-AP Australian Academic and Re
  4538         129       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        2594       4549    1159  AMAZON-02, US
 14618         585       3987     448  AMAZON-AES, US
  7896         252         51       7  NU-AS, US
   668         211        702     179  DNIC-AS-00668, US
   376         202        178     151  RISQ-AS, CA
  5786         200         16       1  UPRENET, PR
  2152         148        507      89  CSUNET-NW, US
 18558         135         18       4  NETBLK-RCOEK, US
   270         120        329      88  AS270, US
     1         118          1      45  LVLT-1, 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         279       1967     245  DFN Verein zur Foerderung eines Deutsch
   786         186       1774     183  JANET Jisc Services Limited, GB
  8895         180         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          97         28      69  ROEDUNET, RO
   137          82        677      77  ASGARR Consortium GARR, IT
   553          73        449      73  BELWUE BelWue-Koordination, DE
  2200          66        647      61  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      46  Rede Nacional de Ensino e Pesquisa, BR
 28391         152         10      66  Universidad Juarez Autonoma de Tabasco,
 11340          94         24      54  Red Universitaria Nacional, CL
  1251          60         37      20  FUNDACAO DE AMPARO A PESQUISA DO ESTADO
  2715          58        102      38  Fundacao Carlos Chagas Filho de Amparo 
 19611          45         17       2  Associacao Antonio Vieira - Unisinos, B
 61468          45          3      15  CEDIA, EC
  4270          44         16       1  Red de Interconexion Universitaria, AR
 28614          38          2       2  Fundacao Universidade Regional de Blume
263282          37          5      12  FUNDACAO UNIVERSIDADE DO OESTE DE SANTA

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         374        319      74  TENET-1, ZA
 36914         207         82       3  KENET-AS, KE
  2561          67          4      32  EUN, EG
  8094          50         48       4  PUKNET, ZA
327687          37         28       3  RENU, UG
327700          35         16       1  MoRENet, MZ
  6879          24          2       9  ENSTINET-, EG
 37074          13          8       2  UG-AS, GH
 37501          11         49       6  UOFS, ZA
 36982           8         33       8  UCT, 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        2594       4549    1159  AMAZON-02, US
  2907         586       2084     457  SINET-AS Research Organization of Infor
 14618         585       3987     448  AMAZON-AES, US
  7497         432        182      24  CSTNET-AS-AP Computer Network Informati
  2018         374        319      74  TENET-1, ZA
   680         279       1967     245  DFN Verein zur Foerderung eines Deutsch
  7896         252         51       7  NU-AS, US
   668         211        702     179  DNIC-AS-00668, US
 36914         207         82       3  KENET-AS, KE
   376         202        178     151  RISQ-AS, CA

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         432          408  CSTNET-AS-AP Computer Network Information Cente
  2018         374          300  TENET-1, ZA
  7896         252          245  NU-AS, US
 36914         207          204  KENET-AS, KE
  5786         200          199  UPRENET, PR
 58647         179          177  KAGAWAU-AS Kagawa University, JP
  8895         180          176  ISU Internet Services Unit ISU, SA
 14618         585          137  AMAZON-AES, US
 18558         135          131  NETBLK-RCOEK, US
  1916         176          130  Rede Nacional de Ensino e Pesquisa, BR

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
     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      
/13:24      /14:59      /15:174     /16:2094    /17:454     /18:469     
/19:596     /20:987     /21:1000    /22:1599    /23:1765    /24:12544   
/25:81      /26:55      /27:119     /28:7       /29:51      /30:0       
/31:3       /32:5       

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

   ASN  No of nets  Total ann.  Description
 16509         408        2594  AMAZON-02, US
 14618         194         585  AMAZON-AES, US
 36914         194         207  KENET-AS, KE
  8895         175         180  ISU Internet Services Unit ISU, SA
 23024          53         113  OCDE, US
     1          35         118  LVLT-1, US
 28614          32          38  Fundacao Universidade Regional de Blumenau, BR
 25977          31          45  HCCS, US
327700          31          35  MoRENet, MZ
263282          30          37  FUNDACAO UNIVERSIDADE DO OESTE DE SANTA CATARIN

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        13:46       14:85       15:64       16:5        18:51     
  23:43       24:3        31:6        35:1        37:7        38:9      
  40:1        41:108      42:10       44:5        45:45       46:11     
  47:1        49:10       50:8        52:717      54:245      58:1      
  59:20       60:4        61:3        62:7        63:38       64:142    
  65:5        66:56       67:61       68:17       69:45       70:28     
  71:17       72:16       74:43       76:38       77:9        78:3      
  79:10       80:15       81:28       82:6        83:6        84:9      
  85:42       86:4        87:1        88:1        89:12       91:52     
  93:23       94:4        95:5        96:6        97:1        98:11     
  99:55      101:6       102:13      103:337     104:106     107:7      
 108:21      109:12      110:3       111:20      114:23      116:5      
 117:61      118:32      119:22      121:27      122:11      123:8      
 124:39      125:4       128:80      129:185     130:149     131:89     
 132:58      133:140     134:99      135:1       136:204     137:101    
 138:9       139:16      140:51      141:3       142:58      143:33     
 144:67      145:2       146:129     147:65      148:200     149:15     
 150:42      151:7       152:81      153:13      154:26      155:61     
 156:70      157:31      158:46      159:123     160:30      161:29     
 162:51      163:74      164:28      165:64      166:1       167:22     
 168:169     169:12      170:106     171:1       172:10      173:16     
 174:1       175:29      176:12      177:12      178:2       179:10     
 180:21      182:6       184:4       185:60      186:3       187:19     
 188:14      189:5       190:33      191:33      192:1493    193:312    
 194:127     195:77      196:162     197:115     198:502     199:323    
 200:245     201:39      202:636     203:429     204:354     205:194    
 206:209     207:191     208:103     209:130     210:180     211:15     
 212:150     213:16      214:7       216:147     217:11      218:22     
 219:6       220:16      222:5       223:3      

End of report


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