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

REN Routing Table Report cscora at frr.nsrc.org
Fri Nov 18 22:20:36 UTC 2022


IPv4 R&E Routing Table Report   22:20 GMT Fri 18 Nov, 2022

  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:                               19958
    Prefixes after maximum aggregation (per Origin AS):           11889
    Deaggregation factor:                                          1.68
    Unique aggregates announced (without unneeded subnets):       13411
    Number of IPv4 prefixes with a valid ROA:                      4501
    Number of IPv4 prefixes with an invalid ROA:                     68
    Number of IPv4 prefixes with no ROA:                          15389
Total ASes present in the Internet Routing Table:                  2935
    Prefixes per ASN:                                              6.80
Origin-only ASes present in the Internet Routing Table:            2529
Origin ASes announcing only one prefix:                            1108
Transit ASes present in the Internet Routing Table:                 406
Transit-only ASes present in the Internet Routing Table:             81
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:                                      17
    Max AS path prepend of ASN ( 53263)                              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:                      40650
Number of 32-bit ASNs visible in the Routing Table:                 610
Prefixes from 32-bit ASNs in the Routing Table:                    1756
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:              2
Number of addresses announced to Internet:                    179987712
    Equivalent to 10 /8s, 186 /16s and 101 /24s
    Percentage of available address space announced:                4.9
    Percentage of allocated address space announced:                4.9
    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:        2406

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

Prefixes being announced by APNIC Region ASes:                     4385
    Total APNIC prefixes after maximum aggregation:                2204
    APNIC Deaggregation factor:                                    1.99
Prefixes being announced from the APNIC address blocks:            4387
    Unique aggregates announced from the APNIC address blocks:     2558
APNIC Region origin ASes present in the Internet Routing Table:     510
    APNIC Prefixes per ASN:                                        8.60
APNIC Region origin ASes announcing only one prefix:                205
APNIC Region transit ASes present in the Internet Routing Table:     65
Average APNIC Region AS path length visible:                        4.0
    Max APNIC Region AS path length visible:                         16
Number of APNIC region 32-bit ASNs visible in the Routing Table:    169
Number of APNIC addresses announced to Internet:               36064512
    Equivalent to 2 /8s, 38 /16s and 77 /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:                     10222
    Total ARIN prefixes after maximum aggregation:                 6238
    ARIN Deaggregation factor:                                     1.64
Prefixes being announced from the ARIN address blocks:            10077
    Unique aggregates announced from the ARIN address blocks:      6962
ARIN Region origin ASes present in the Internet Routing Table:     1520
    ARIN Prefixes per ASN:                                         6.63
ARIN Region origin ASes announcing only one prefix:                 552
ARIN Region transit ASes present in the Internet Routing Table:     203
Average ARIN Region AS path length visible:                         3.7
    Max ARIN Region AS path length visible:                          17
Number of ARIN region 32-bit ASNs visible in the Routing Table:     246
Number of ARIN addresses announced to Internet:                84256256
    Equivalent to 5 /8s, 5 /16s and 166 /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:                      3389
    Total RIPE prefixes after maximum aggregation:                 2732
    RIPE Deaggregation factor:                                     1.24
Prefixes being announced from the RIPE address blocks:             3536
    Unique aggregates announced from the RIPE address blocks:      2921
RIPE Region origin ASes present in the Internet Routing Table:      645
    RIPE Prefixes per ASN:                                         5.48
RIPE Region origin ASes announcing only one prefix:                 286
RIPE Region transit ASes present in the Internet Routing Table:      91
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:     129
Number of RIPE addresses announced to Internet:                53472768
    Equivalent to 3 /8s, 47 /16s and 238 /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:                    1373
    Total LACNIC prefixes after maximum aggregation:                546
    LACNIC Deaggregation factor:                                   2.51
Prefixes being announced from the LACNIC address blocks:           1372
    Unique aggregates announced from the LACNIC address blocks:     742
LACNIC Region origin ASes present in the Internet Routing Table:    155
    LACNIC Prefixes per ASN:                                       8.85
LACNIC Region origin ASes announcing only one prefix:                60
LACNIC Region transit ASes present in the Internet Routing Table:    22
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:    61
Number of LACNIC addresses announced to Internet:               4160000
    Equivalent to 0 /8s, 63 /16s and 122 /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:                    584
    Total AfriNIC prefixes after maximum aggregation:               164
    AfriNIC Deaggregation factor:                                  3.56
Prefixes being announced from the AfriNIC address blocks:           584
    Unique aggregates announced from the AfriNIC address blocks:    226
AfriNIC Region origin ASes present in the Internet Routing Table:    19
    AfriNIC Prefixes per ASN:                                     30.74
AfriNIC Region origin ASes announcing only one prefix:                5
AfriNIC Region transit ASes present in the Internet Routing Table:    5
Average AfriNIC Region AS path length visible:                      2.6
    Max AfriNIC Region AS path length visible:                        5
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:    5
Number of AfriNIC addresses announced to Internet:              2033664
    Equivalent to 0 /8s, 31 /16s and 8 /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         570       2156     457  SINET-AS Research Organization of Infor
  7497         434        182      24  CSTNET-AS-AP Computer Network Informati
  1237         185         74     134  KREONET-AS-KR KISTI, KR
  7575         175        329     121  AARNET-AS-AP Australian Academic and Re
 58647         175         18       2  KAGAWAU-AS Kagawa University, JP
  4538         111       2368      69  ERX-CERNET-BKB China Education and Rese
  4621          73         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
 23570          59          5      11  INCHEON-AS-KR UNIVERSITY OF INCHEON, KR

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         221        718     176  DNIC-AS-00668, US
   376         203        178     152  RISQ-AS, CA
  5786         199         16       1  UPRENET, PR
 16509         191         14     105  AMAZON-02, US
 18530         163         28     130  ISOMEDIA-1, US
  2152         148        507      92  CSUNET-NW, US
 18558         134         18       4  NETBLK-RCOEK, US
 11404         128        177     105  AS-WAVE-1, US
   270         118        329      87  AS270, US
 23024         115          7      13  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         281       1935     249  DFN Verein zur Foerderung eines Deutsch
   786         186       1775     183  JANET Jisc Services Limited, GB
  8895         134         24       3  ISU Internet Services Unit ISU, SA
   559         115        550     106  SWITCH Peering requests: peering at switch
  1103          99       1264      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
  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
 28391         152         10      66  Universidad Juarez Autonoma de Tabasco,
  1916         151        207      39  Rede Nacional de Ensino e Pesquisa, BR
 11340          97         24      55  Red Universitaria Nacional, CL
  1251          65         37      19  FUNDACAO DE AMPARO A PESQUISA DO ESTADO
  2715          58        102      38  Fundacao Carlos Chagas Filho de Amparo 
  4270          44         16       1  Red de Interconexion Universitaria, AR
 61468          42          3      15  CEDIA, EC
 28571          40         40      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         375        319      72  TENET-1, ZA
  8094          48         48      15  PUKNET, ZA
327700          34         16       1  MoRENet, MZ
327687          29         19      21  RENU, UG
  6879          24          2       9  ENSTINET-, EG
 37182          19          1      13  TERNET, TZ
 37501          11         49       6  UOFS, ZA
 37654          10          1       6  RwEdNet-AS, RW
 36982           8         33       8  UCT, ZA
 37215           6          8       1  MAREN, MW

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         570       2156     457  SINET-AS Research Organization of Infor
  7497         434        182      24  CSTNET-AS-AP Computer Network Informati
  2018         375        319      72  TENET-1, ZA
   680         281       1935     249  DFN Verein zur Foerderung eines Deutsch
   668         221        718     176  DNIC-AS-00668, US
   376         203        178     152  RISQ-AS, CA
  5786         199         16       1  UPRENET, PR
 16509         191         14     105  AMAZON-02, US
   786         186       1775     183  JANET Jisc Services Limited, GB
  1237         185         74     134  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          410  CSTNET-AS-AP Computer Network Information Cente
  2018         375          303  TENET-1, ZA
  5786         199          198  UPRENET, PR
 58647         175          173  KAGAWAU-AS Kagawa University, JP
  8895         134          131  ISU Internet Services Unit ISU, SA
 18558         134          130  NETBLK-RCOEK, US
  1916         151          112  Rede Nacional de Ensino e Pesquisa, BR
 23024         115          102  OCDE, US
  2920         113          101  LACOE, US
 16509         191           86  AMAZON-02, US

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
     22063  UNALLOCATED  153.10.0.0/16             2152  CSUNET-NW, US
     33008  UNALLOCATED  162.248.66.0/24          11096  FLORIDANET, 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/ESnet/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/ESnet/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:       293  ESNET, US

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      /15:121     /16:2039    /17:440     /18:460     
/19:594     /20:949     /21:986     /22:1675    /23:1720    /24:10939   
/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
  8895         129         134  ISU Internet Services Unit ISU, SA
 18530          56         163  ISOMEDIA-1, US
 30041          55          65  RACE, US
 23024          53         115  OCDE, US
 19194          43          45  JOVITA, US
 18632          34          65  VOLCANO-VISION, US
 16713          32          55  NOANET-WA, US
 28614          32          38  Fundacao Universidade Regional de Blumenau, BR
 32440          32          47  LONI, US
 46115          32          35  LUTHER, US

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

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

   1:3         5:15        6:4         8:6        12:1        14:35     
  15:5        18:43       23:54       24:6        31:2        35:12     
  37:4        38:26       40:1        41:51       42:10       44:7      
  45:44       46:6        47:1        49:10       50:10       52:21     
  58:1        59:20       60:4        61:3        62:6        63:89     
  64:121      65:23       66:75       67:63       68:18       69:53     
  70:3        71:2        72:31       74:63       76:46       77:7      
  78:3        79:10       80:17       81:28       82:7        83:6      
  84:5        85:38       86:3        87:7        88:1        89:10     
  91:40       92:1        93:6        94:4        95:4        96:5      
  97:3        98:6       101:6       103:242     104:112     107:32     
 108:9       109:5       110:4       111:16      114:23      115:1      
 116:8       117:61      118:32      119:23      121:26      122:8      
 123:8       124:39      125:4       128:86      129:44      130:91     
 131:62      132:61      133:146     134:102     135:1       136:206    
 137:71      138:9       139:5       140:57      141:4       142:52     
 143:31      144:22      145:2       146:224     147:70      148:194    
 149:12      150:132     151:9       152:82      153:14      154:28     
 155:70      156:67      157:23      158:21      159:162     160:30     
 161:62      162:49      163:64      164:11      165:51      166:3      
 167:17      168:135     169:14      170:89      171:1       172:6      
 173:15      174:8       175:31      177:10      179:6       180:16     
 182:4       184:3       185:46      186:3       187:19      188:14     
 189:3       190:18      191:36      192:1544    193:253     194:128    
 195:55      196:159     198:570     199:344     200:232     201:39     
 202:607     203:435     204:410     205:144     206:221     207:185    
 208:123     209:143     210:179     211:13      212:167     213:5      
 214:8       216:122     217:7       218:22      219:6       220:17     
 222:5       223:4      

End of report


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