[REN-BGP-stats-all] IPv4 R&E Routing Table Report - ESnet (R&E) view

REN Routing Table Report cscora at frr.nsrc.org
Sun Jul 9 22:20:35 UTC 2023


IPv4 R&E Routing Table Report   22:20 GMT Sun 09 Jul, 2023

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

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

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

BGP routing table entries examined:                               20107
    Prefixes after maximum aggregation (per Origin AS):           11547
    Deaggregation factor:                                          1.74
    Unique aggregates announced (without unneeded subnets):       12920
    Number of IPv4 prefixes with a valid ROA:                      5370
    Number of IPv4 prefixes with an invalid ROA:                     48
    Number of IPv4 prefixes with no ROA:                          14689
Total ASes present in the Internet Routing Table:                  2940
    Prefixes per ASN:                                              6.84
Origin-only ASes present in the Internet Routing Table:            2533
Origin ASes announcing only one prefix:                            1124
Transit ASes present in the Internet Routing Table:                 407
Transit-only ASes present in the Internet Routing Table:             80
Paths with bogon ASNs present in the IPv4 Routing Table:              0
Average AS path length visible in the Internet Routing Table:       3.8
    Max AS path length visible:                                      19
    Max AS path prepend of ASN (395156)                              12
Prefixes from unregistered ASNs in the Routing Table:                12
    Number of instances of unregistered ASNs:                        12
Number of 32-bit ASNs allocated by the RIRs:                      42272
Number of 32-bit ASNs visible in the Routing Table:                 662
Prefixes from 32-bit ASNs in the Routing Table:                    2029
Number of bogon 32-bit ASNs visible in the Routing Table:             0
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:              3
Number of addresses announced to Internet:                    178972416
    Equivalent to 10 /8s, 170 /16s and 231 /24s
    Percentage of available address space announced:                4.8
    Percentage of allocated address space announced:                4.8
    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:        2602

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

Prefixes being announced by APNIC Region ASes:                     4464
    Total APNIC prefixes after maximum aggregation:                2176
    APNIC Deaggregation factor:                                    2.05
Prefixes being announced from the APNIC address blocks:            4449
    Unique aggregates announced from the APNIC address blocks:     2517
APNIC Region origin ASes present in the Internet Routing Table:     511
    APNIC Prefixes per ASN:                                        8.71
APNIC Region origin ASes announcing only one prefix:                214
APNIC Region transit ASes present in the Internet Routing Table:     56
Average APNIC Region AS path length visible:                        3.9
    Max APNIC Region AS path length visible:                         12
Number of APNIC region 32-bit ASNs visible in the Routing Table:    186
Number of APNIC addresses announced to Internet:               35700736
    Equivalent to 2 /8s, 32 /16s and 192 /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, 131072-153913
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:                      9684
    Total ARIN prefixes after maximum aggregation:                 5876
    ARIN Deaggregation factor:                                     1.65
Prefixes being announced from the ARIN address blocks:             9653
    Unique aggregates announced from the ARIN address blocks:      6545
ARIN Region origin ASes present in the Internet Routing Table:     1487
    ARIN Prefixes per ASN:                                         6.49
ARIN Region origin ASes announcing only one prefix:                 542
ARIN Region transit ASes present in the Internet Routing Table:     199
Average ARIN Region AS path length visible:                         3.7
    Max ARIN Region AS path length visible:                          19
Number of ARIN region 32-bit ASNs visible in the Routing Table:     249
Number of ARIN addresses announced to Internet:                82406144
    Equivalent to 4 /8s, 233 /16s and 107 /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:                      3443
    Total RIPE prefixes after maximum aggregation:                 2764
    RIPE Deaggregation factor:                                     1.25
Prefixes being announced from the RIPE address blocks:             3502
    Unique aggregates announced from the RIPE address blocks:      2886
RIPE Region origin ASes present in the Internet Routing Table:      654
    RIPE Prefixes per ASN:                                         5.35
RIPE Region origin ASes announcing only one prefix:                 287
RIPE Region transit ASes present in the Internet Routing Table:     102
Average RIPE Region AS path length visible:                         3.6
    Max RIPE Region AS path length visible:                          12
Number of RIPE region 32-bit ASNs visible in the Routing Table:     136
Number of RIPE addresses announced to Internet:                54263808
    Equivalent to 3 /8s, 60 /16s and 0 /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:                557
    LACNIC Deaggregation factor:                                   2.57
Prefixes being announced from the LACNIC address blocks:           1429
    Unique aggregates announced from the LACNIC address blocks:     753
LACNIC Region origin ASes present in the Internet Routing Table:    158
    LACNIC Prefixes per ASN:                                       9.04
LACNIC Region origin ASes announcing only one prefix:                57
LACNIC Region transit ASes present in the Internet Routing Table:    24
Average LACNIC Region AS path length visible:                       4.4
    Max LACNIC Region AS path length visible:                        13
Number of LACNIC region 32-bit ASNs visible in the Routing Table:    66
Number of LACNIC addresses announced to Internet:               4055296
    Equivalent to 0 /8s, 61 /16s and 225 /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:                   1072
    Total AfriNIC prefixes after maximum aggregation:               164
    AfriNIC Deaggregation factor:                                  6.54
Prefixes being announced from the AfriNIC address blocks:          1071
    Unique aggregates announced from the AfriNIC address blocks:    216
AfriNIC Region origin ASes present in the Internet Routing Table:    46
    AfriNIC Prefixes per ASN:                                     23.28
AfriNIC Region origin ASes announcing only one prefix:               24
AfriNIC Region transit ASes present in the Internet Routing Table:    8
Average AfriNIC Region AS path length visible:                      3.4
    Max AfriNIC Region AS path length visible:                       14
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:   25
Number of AfriNIC addresses announced to Internet:              2541568
    Equivalent to 0 /8s, 38 /16s and 200 /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         584       2143     456  SINET-AS Research Organization of Infor
  7497         434        180      23  CSTNET-AS-AP Computer Network Informati
  1237         186         74     137  KREONET-AS-KR KISTI, KR
 58647         178         18       2  KAGAWAU-AS Kagawa University, JP
  7575         176        329     120  AARNET-AS-AP Australian Academic and Re
 55824         118         18      11  NKN-CORE-NW NKN Core Network, IN
  4538         112       2368      69  ERX-CERNET-BKB China Education and Rese
  4621          69         37      10  UNINET-AS-AP UNINET-, TH
  9411          66         16       2  NONTRINET-AS-AP Kasetsart University, T
  4762          65          4       1  MAHIDOL-BORDER-AS Mahidol University, T

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
   668         217        636     180  DNIC-AS-00668, US
   376         202        178     150  RISQ-AS, CA
  5786         179         16       1  UPRENET, PR
 18530         161         27     128  ISOMEDIA-1, US
  2152         139        507      94  CSUNET-NW, US
 11404         134        178     106  AS-WAVE-1, US
 18558         134         18       4  NETBLK-RCOEK, US
    81         127        473      32  NCREN, US
   270         115        329      84  AS270, US
 23024         113          7      17  OCDE, US

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
   680         283       1919     249  DFN Verein zur Foerderung eines Deutsch
   786         186       1767     183  JANET Jisc Services Limited, GB
  8895         136         24       4  ISU Internet Services Unit ISU, SA
   559         112        533     104  SWITCH Peering requests: peering at switch
  2614          94         27      74  ROEDUNET, RO
  1103          93       1246      82  SURFNET-NL SURFnet, The Netherlands, NL
   137          82        677      77  ASGARR Consortium GARR, IT
   553          74        465      74  BELWUE BelWue-Koordination, DE
  1930          65         81      60  RCCN Fundacao para a Ciencia e a Tecnol
  2200          64        599      59  FR-RENATER Reseau National de telecommu

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
  1916         219        192      42  Rede Nacional de Ensino e Pesquisa, BR
 28391         152         10      66  Universidad Juarez Autonoma de Tabasco,
 11340         103         24      47  Red Universitaria Nacional, CL
  2715          58        102      38  Fundacao Carlos Chagas Filho de Amparo 
  1251          56         36      15  FUNDACAO DE AMPARO A PESQUISA DO ESTADO
  4270          48         16       1  Red de Interconexion Universitaria, AR
 61468          42          3      14  CEDIA, EC
 28571          40         39      18  UNIVERSIDADE DE SAO PAULO, BR
 28614          38          2       2  Fundacao Universidade Regional de Blume
 19611          37         17       2  Associacao Antonio Vieira - Unisinos, B

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
  2018         369        319      71  TENET-1, ZA
 36914         257         82       3  KENET-AS, KE
327687         165         28       3  RENU, UG
  8094          48         48      15  PUKNET, ZA
327700          40         16       1  MoRENet, MZ
 37215          37          8       1  MAREN, MW
  3208          32          2       1  ARN, DZ
  6879          24          2       9  ENSTINET-, EG
 37074          13          8       2  UG-AS, GH
 37501          11         49       6  UOFS, ZA

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
  2907         584       2143     456  SINET-AS Research Organization of Infor
  7497         434        180      23  CSTNET-AS-AP Computer Network Informati
  2018         369        319      71  TENET-1, ZA
   680         283       1919     249  DFN Verein zur Foerderung eines Deutsch
 36914         257         82       3  KENET-AS, KE
  1916         219        192      42  Rede Nacional de Ensino e Pesquisa, BR
   668         217        636     180  DNIC-AS-00668, US
   376         202        178     150  RISQ-AS, CA
   786         186       1767     183  JANET Jisc Services Limited, GB
  1237         186         74     137  KREONET-AS-KR KISTI, KR

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

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

   ASN  No of nets  Net Savings  Description
  7497         434          411  CSTNET-AS-AP Computer Network Information Cente
  2018         369          298  TENET-1, ZA
 36914         257          254  KENET-AS, KE
  5786         179          178  UPRENET, PR
  1916         219          177  Rede Nacional de Ensino e Pesquisa, BR
 58647         178          176  KAGAWAU-AS Kagawa University, JP
327687         165          162  RENU, UG
  8895         136          132  ISU Internet Services Unit ISU, SA
 18558         134          130  NETBLK-RCOEK, US
 55824         118          107  NKN-CORE-NW NKN Core Network, IN

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

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

    Bad AS  Designation  Net Originated      Transit AS  Transit AS Name
     29867  UNALLOCATED  64.202.80.0/20           22742  CT-EDU-NET, US
    394607  UNALLOCATED  104.249.65.0/24          23024  OCDE, US
     33008  UNALLOCATED  162.248.66.0/24          11096  FLORIDANET, US
     29867  UNALLOCATED  192.160.243.0/24         22742  CT-EDU-NET, US
     29867  UNALLOCATED  192.160.244.0/24         22742  CT-EDU-NET, US
     19176  UNALLOCATED  206.174.131.0/24         32278  GETWIRELESS, US
     19176  UNALLOCATED  206.174.140.0/24         32278  GETWIRELESS, US
     19176  UNALLOCATED  206.174.141.0/24         32278  GETWIRELESS, US
     19176  UNALLOCATED  206.174.142.0/24         32278  GETWIRELESS, US
     19176  UNALLOCATED  206.174.144.0/24         32278  GETWIRELESS, US

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

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

Unassigned Network     ASN Information  AS Name
64.202.80.0/20       Origin:     29867  UNASSIGNED
64.202.80.0/20      Transit:     22742  CT-EDU-NET, US
102.36.194.0/23      Origin:      2018  TENET-1, ZA
102.36.194.0/23     Transit:       293  ESNET, US
202.58.231.0/24      Origin:    134096  EHEALTHNSW-AS-AP eHealth NSW, AU
202.58.231.0/24     Transit:      7575  AARNET-AS-AP Australian Academic and Res

Complete listing at https://bgp.nsrc.org/REN/ESnet/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        /9:0       /10:0       /11:0       /12:0       
/13:0       /14:35      /15:122     /16:2027    /17:443     /18:453     
/19:609     /20:924     /21:966     /22:1666    /23:1750    /24:11112   
/25:0       /26:0       /27:0       /28:0       /29:0       /30:0       
/31:0       /32:0       

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

   ASN  No of nets  Total ann.  Description
 36914         245         257  KENET-AS, KE
  8895         131         136  ISU Internet Services Unit ISU, SA
 30041          56          66  RACE, US
 18530          55         161  ISOMEDIA-1, US
 23024          52         113  OCDE, US
 19194          43          45  JOVITA, US
 18632          34          66  VOLCANO-VISION, US
 32440          34          49  LONI, US
327700          34          40  MoRENet, MZ
 16713          33          56  NOANET-WA, US

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

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

   1:1         5:15        6:4         8:6        12:1        14:89     
  18:42       23:43       24:7        31:8        35:4        37:3      
  38:26       40:1        41:144      42:10       44:7        45:47     
  46:6        47:1        49:9        50:9        52:3        58:1      
  59:19       60:4        61:3        62:7        63:89       64:104    
  65:22       66:64       67:57       68:18       69:48       70:3      
  71:1        72:30       74:60       76:48       77:9        78:3      
  79:10       80:13       81:26       82:5        83:6        84:5      
  85:41       86:7        87:6        89:10       91:43       92:1      
  93:6        94:6        95:2        97:3        98:4       101:2      
 102:29      103:224     104:109     107:30      108:9       109:6      
 111:16      114:23      116:6       117:61      118:32      119:18     
 121:27      122:8       123:8       124:38      125:4       128:87     
 129:45      130:89      131:55      132:61      133:154     134:105    
 136:183     137:135     138:9       139:5       140:54      141:2      
 142:51      143:29      144:28      145:2       146:198     147:66     
 148:161     149:12      150:42      151:14      152:141     153:14     
 154:31      155:63      156:67      157:22      158:39      159:115    
 160:30      161:63      162:47      163:78      164:10      165:46     
 166:3       167:14      168:131     169:8       170:83      172:6      
 173:8       174:8       175:27      177:6       179:12      180:15     
 181:1       182:1       184:3       185:54      186:3       187:19     
 188:14      189:3       190:18      191:13      192:1515    193:288    
 194:123     195:60      196:200     197:163     198:563     199:339    
 200:308     201:39      202:613     203:432     204:404     205:144    
 206:221     207:179     208:119     209:140     210:175     211:2      
 212:168     213:5       214:8       216:119     217:11      218:22     
 219:6       220:17      222:2       223:4      

End of report


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