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

REN Routing Table Report cscora at frr.nsrc.org
Thu Jul 6 22:20:38 UTC 2023


IPv4 R&E Routing Table Report   22:20 GMT Thu 06 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:                               20100
    Prefixes after maximum aggregation (per Origin AS):           11535
    Deaggregation factor:                                          1.74
    Unique aggregates announced (without unneeded subnets):       12897
    Number of IPv4 prefixes with a valid ROA:                      5241
    Number of IPv4 prefixes with an invalid ROA:                     48
    Number of IPv4 prefixes with no ROA:                          14811
Total ASes present in the Internet Routing Table:                  2940
    Prefixes per ASN:                                              6.84
Origin-only ASes present in the Internet Routing Table:            2535
Origin ASes announcing only one prefix:                            1122
Transit ASes present in the Internet Routing Table:                 405
Transit-only ASes present in the Internet Routing Table:             79
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:                13
    Number of instances of unregistered ASNs:                        13
Number of 32-bit ASNs allocated by the RIRs:                      42238
Number of 32-bit ASNs visible in the Routing Table:                 660
Prefixes from 32-bit ASNs in the Routing Table:                    1988
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:              4
Number of addresses announced to Internet:                    178941696
    Equivalent to 10 /8s, 170 /16s and 111 /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:        2608

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

Prefixes being announced by APNIC Region ASes:                     4457
    Total APNIC prefixes after maximum aggregation:                2177
    APNIC Deaggregation factor:                                    2.05
Prefixes being announced from the APNIC address blocks:            4442
    Unique aggregates announced from the APNIC address blocks:     2512
APNIC Region origin ASes present in the Internet Routing Table:     509
    APNIC Prefixes per ASN:                                        8.73
APNIC Region origin ASes announcing only one prefix:                211
APNIC Region transit ASes present in the Internet Routing Table:     55
Average APNIC Region AS path length visible:                        3.9
    Max APNIC Region AS path length visible:                         14
Number of APNIC region 32-bit ASNs visible in the Routing Table:    186
Number of APNIC addresses announced to Internet:               35700224
    Equivalent to 2 /8s, 32 /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, 131072-153913
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:                      9709
    Total ARIN prefixes after maximum aggregation:                 5885
    ARIN Deaggregation factor:                                     1.65
Prefixes being announced from the ARIN address blocks:             9678
    Unique aggregates announced from the ARIN address blocks:      6557
ARIN Region origin ASes present in the Internet Routing Table:     1492
    ARIN Prefixes per ASN:                                         6.49
ARIN Region origin ASes announcing only one prefix:                 546
ARIN Region transit ASes present in the Internet Routing Table:     200
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:     250
Number of ARIN addresses announced to Internet:                82412032
    Equivalent to 4 /8s, 233 /16s and 130 /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:                 2763
    RIPE Deaggregation factor:                                     1.25
Prefixes being announced from the RIPE address blocks:             3502
    Unique aggregates announced from the RIPE address blocks:      2887
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:                 286
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:                54272768
    Equivalent to 3 /8s, 60 /16s and 35 /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:                    1393
    Total LACNIC prefixes after maximum aggregation:                534
    LACNIC Deaggregation factor:                                   2.61
Prefixes being announced from the LACNIC address blocks:           1390
    Unique aggregates announced from the LACNIC address blocks:     720
LACNIC Region origin ASes present in the Internet Routing Table:    155
    LACNIC Prefixes per ASN:                                       8.97
LACNIC Region origin ASes announcing only one prefix:                55
LACNIC Region transit ASes present in the Internet Routing Table:    23
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:    63
Number of LACNIC addresses announced to Internet:               4011520
    Equivalent to 0 /8s, 61 /16s and 54 /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:                   1085
    Total AfriNIC prefixes after maximum aggregation:               165
    AfriNIC Deaggregation factor:                                  6.58
Prefixes being announced from the AfriNIC address blocks:          1084
    Unique aggregates announced from the AfriNIC address blocks:    217
AfriNIC Region origin ASes present in the Internet Routing Table:    46
    AfriNIC Prefixes per ASN:                                     23.57
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:              2540032
    Equivalent to 0 /8s, 38 /16s and 194 /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         580       2143     456  SINET-AS Research Organization of Infor
  7497         434        180      23  CSTNET-AS-AP Computer Network Informati
  1237         185         74     137  KREONET-AS-KR KISTI, KR
 58647         178         18       2  KAGAWAU-AS Kagawa University, JP
  7575         175        329     119  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         198         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         135         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          57         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         382        319      72  TENET-1, ZA
 36914         259         82       3  KENET-AS, KE
327687         162         28       3  RENU, UG
  8094          48         48      15  PUKNET, ZA
327700          41         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         580       2143     456  SINET-AS Research Organization of Infor
  7497         434        180      23  CSTNET-AS-AP Computer Network Informati
  2018         382        319      72  TENET-1, ZA
   680         283       1919     249  DFN Verein zur Foerderung eines Deutsch
 36914         259         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
  5786         198         16       1  UPRENET, PR
   786         186       1767     183  JANET Jisc Services Limited, GB

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         382          310  TENET-1, ZA
 36914         259          256  KENET-AS, KE
  5786         198          197  UPRENET, PR
  1916         219          177  Rede Nacional de Ensino e Pesquisa, BR
 58647         178          176  KAGAWAU-AS Kagawa University, JP
327687         162          159  RENU, UG
  8895         135          131  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
    138933  UNALLOCATED  103.137.86.0/24          24490  TEIN2-SG-AP Trans-Eurasia In
    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

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
103.137.86.0/24      Origin:    138933  UNASSIGNED
103.137.86.0/24     Transit:     24490  TEIN2-SG-AP Trans-Eurasia Information Ne
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    /17:444     /18:453     
/19:608     /20:923     /21:962     /22:1658    /23:1749    /24:11119   
/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         247         259  KENET-AS, KE
  8895         130         135  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
327700          35          41  MoRENet, MZ
 18632          34          66  VOLCANO-VISION, US
 32440          34          49  LONI, US
 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        41:146      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        96:5        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      133:151    
 134:105     136:202     137:133     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      152:149    
 153:14      154:31      155:63      156:66      157:22      158:39     
 159:115     160:30      161:62      162:47      163:66      164:10     
 165:46      166:3       167:14      168:131     169:8       170:79     
 172:6       173:8       174:8       175:19      177:6       179:12     
 180:15      181:1       182:1       184:3       185:54      186:3      
 187:19      188:14      189:3       190:17      191:13      192:1516   
 193:288     194:123     195:60      196:201     197:164     198:564    
 199:339     200:309     201:39      202:612     203:433     204:404    
 205:144     206:221     207:179     208:119     209:140     210:177    
 211:2       212:167     213:5       214:8       216:119     217:10     
 218:22      219:6       220:17      222:2       223:4      

End of report


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